... .5 mm 10 mm, 11 mm 11.1 mm 12 mm 12.7 mm to 14.2 mm to 15.8 mm to ... 5.6 mm 6 mm 6.4 mm 9 mm 12 mm Different radius straightway : 3 * 4 mm, 6 * 9 ... mm, September 12 mm, 6 * 12 mm 6.4 * 3.9 mm 6.4 x ... : 2 head, 4 head,6 head , 8 first,10 head, 12 head, head of 14, 16 head, 20 head;Small: 4 ... ,large diameter: 4 mm 6 mm, 8 mm, 10 mm, 12 mm Note: 4 mm tee, said a tube is the ...